Frictional transmission element.



No. 816,388. PATENTBD MAR. 27, 1906.

P. SECHIARI.

FRICTIUNAL TRANSMISSION ELEMENT. WML unimos FILED Nov. s lacs.

UNITED STAITES PATENT erlernen...

rARAscIIEvA snonnini, or Penis. FRANCE, AssIG'NoR To LA SOCIT CIVILE Ir'rUDES DE LINDCHIRABLE GRIMSON, 0F LYON, FRANCE.

FRICTIONAL TRANSMISSION ELEMENT.

Specification of Letters Patent.

Patented March 27` 1906.

Application Glad November B, 1905. Serial No 286.090. (Hedel.)

.To au whom it my concern.-

Beit known that I, PAnAsoHEvA Seemann a subject of the King` of Greece, and a. resi dent of Paris France, have invented certain new and useiul Improvements in Frictional Transmission Elementsyof which the following is e specification.

This invention relates to transmission elements, such as driving-belts and coverings for friction-wheels; and oneof the objects of the invention is to provide in such elements a covering or envelop which cohcres in the proper degree to the driving or driven element.

A further object of the invention is to provide im roved means for mounting and backjpv upt; iis covering.

7Vith these ends 1n view the invention con' sists in the novel features and combinations :o f ports to be hereinafter described and claimed.

In the accompanying drawings, in which similar characters of reference Indicate the same ports throughout the several views, Figure i is n perspective view of a section of drivingbelt constructed in accordance with the invention. Fig. 2 is e similar view of a wider and heavier belt, and Fig. 3 shows in perspective n belt of still larger proportions.

In carrying out the invention the body of the belt is formed of one or n number of layers tof textile fabric, such as canvas.

In the form shown in Fig. 1 the belt is made up from a single ply of textile material which is covered throughout its surface with denaturized cork-viz., cork from which the mineral components have been removed in order to render it excessivelyT su ple-said cork being affixed to the textile fabric in the form of sheets, es shown at c in the drawings, by means of cement, which preferably has a base of indiarnbber- The belt shown in Fig. 2 is composed of three plies of textile fabric t snda. coveringV of denaturiz/ed 5511i?" Tlie plies orlyers of textile fabric may be produced by folding one iecein a direction transversely of the belt or liy su erposing a number of seperate plies. In or er to increase the cohesion between the layers, the textile fabric may be clendered. Q:.1 humm om than cemented together by Vsion of the belt or frictionfwhee neanvsggement which prefcrabl contains a solution of iiidii'ibber. The s eets of deeturized cork are then applied as previously described. ,s

Fi 3 shows a belt formed of six plies of texti e fabric. It is obvious that by increasinff the number of plies the strength of the be t is correspondinglyr increasedf and the belts may be mede in any width, es desired.A

The method of attachment may he the same as for leather belts--in the cese of continuous belts by disposing the plies in such a manner at the connection that by sewing them s continuous belt is obtained, or by eni- 6 5 ploying hooks of any appropriate kind, such as thoseemployed for eather belts. Whetever their dimensions, either as regards width or diameter, the coverin s for friction-Wheels are obtained Without a reak or jointvb af- 7o fixing the superposed plies or portions o fabric in such a manner that they break joint with each other. The joints are then sewed and a band without a break therebyV obtained. The outer or working surface of the 7 5 band is then covered with denaturized cork sheets.

The vuloenizetion of the indie-rubber solution by which the different plies are e plied to each other is effected by known metlliods.

The surface of denaturzed cork provided by my invention produces the proper adheto the driving or driven element, all slipping being prevented.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A rietionel transmission element hsving a covering or envelop of cork.

2. A transmission element having a. Working surface of exister-ized cork.

3. A transmission element havin a covering of denaturized cork applied in s eets.

4. A transmission element having a body 95 of textile fabric and a, covering'composed of sheets of deneturized cork.

5. A drivin' -belt comprising a body of textile fabric aufn covering of denaturized cork applied in Sheets.

6. A driving-belt comprising supe sed plies of textile fabric and a covering o cork IOO sheets applied thereto by rubber-containing In testimony whereof I have signed this cement. specification in the presence of two subscrib- 7. A driving-belt embodying a plurality of ing Witnesses.

plies of textile fabric applied to each other by PARASCHEVA SECHIARI.

means of india-rubber cement, and a cover- Witnesses:

ing of cork sheets likewise applied by means l EMILE LEDRET, of india-rubber cement to the outer plies. `I HANSON C. COKE. 

